src/de/steamwar/bungeecore/listeners/ChatListener.java

@@ -82,11 +82,10 @@ public class ChatListener extends BasicListener {
     }
 
     public static void sendChat(ChatSender sender, Stream<ChatSender> receivers, String format, ChatSender msgReceiver, String message) {
-        if(chatFilter(sender, message))
-            return;
-
         SteamwarUser user = sender.user();
-        String coloredMessage = (user.getUserGroup() != UserGroup.Member || coloredTeams.contains(user.getTeam())) ? ChatColor.translateAlternateColorCodes('&', message) : message;
+        final String coloredMessage = (user.getUserGroup() != UserGroup.Member || coloredTeams.contains(user.getTeam())) ? ChatColor.translateAlternateColorCodes('&', message) : message;
+        if(chatFilter(sender, coloredMessage))
+            return;
 
         AtomicBoolean noReceiver = new AtomicBoolean(true);
         receivers.filter(ChatSender::chatShown).forEach(player -> {
@@ -132,6 +131,11 @@ public class ChatListener extends BasicListener {
             return true;
         }
 
+        if(message.replace("§[a-f0-9klmno]", "").trim().isEmpty()) {
+            sender.system("CHAT_EMPTY");
+            return true;
+        }
+
         SteamwarUser user = sender.user();
         UserGroup group = user.getUserGroup();
         if(!group.isTeamGroup() && (message.contains("http:") || message.contains("https:") || message.contains("www."))){

src/de/steamwar/messages/BungeeCore.properties

@@ -521,6 +521,7 @@ CHAT_RECEIVE=§cTo be able to send chat messages, you must also receive them!
 CHAT_NO_LINKS=§cYou may not send links.
 CHAT_BC_USAGE=§8/§7bc §8[§emessage§8]
 CHAT_NO_RECEIVER=§cNobody receives your message
+CHAT_EMPTY=§cDon't write meaningless empty messages.
 
 CHAT_SERVERTEAM=§8STC §e{0}§8» §f{2}
 CHAT_GLOBAL={3}{4}{5}{6}{0}§8» {7}{2}

src/de/steamwar/messages/BungeeCore_de.properties

@@ -500,6 +500,7 @@ CHAT_RECEIVE=§cUm Chatnachrichten versenden zu können, musst du auch welche em
 CHAT_NO_LINKS=§cDu darfst keine Links versenden.
 CHAT_BC_USAGE=§8/§7bc §8[§eNachricht§8]
 CHAT_NO_RECEIVER=§cNiemand empfängt deine Nachricht
+CHAT_EMPTY=§cSchreibe keine inhaltslosen Nachrichten.
 
 CHAT_SERVERTEAM=§8STC §e{0}§8» §f{2}
 CHAT_GLOBAL={3}{4}{5}{6}{0}§8» {7}{2}